Week 6-Meshing of Hood Challenge

Objective: To extract the mid surface for each component and mesh the given hood component with the given target element size of 5 mm mentioned quality criteria.

Follow the below-mentioned quality criteria, mesh the component given below and assign thickness:

Target Element Length = 5mm

S.N	Quality Criteria	Value
1	Aspect Ratio	5
2	Skewness	45
3	Warping	15
4	Taper	0.5
5	Min. Length	2mm
6	Max. Length	8mm
7	Min angle Quad	45
8	Max angle Quad	135
9	Min angle Tria	20
10	Max angle Tria	120
11	Tria %	10

Procedure

• Import the model
• Extract the midsurface for the each component
• Cleanup the component
• Mesh
• Reflect the mesh
• Check quality index

importing geometry:-

• Import the geometry by clicking on the import option and select import geometry.
• Select the file type to STEP.
• Browse and select the file to be imported
• Click the import button

Midsurface extraction

For the above five model the midsurface to be extracted and arrange them according

The midsurface is extracted for the each component using the midsurface option from the geometry menu

Now the midsurface has been extracted and renamed for each component as shown in the below images:-

Geometry clean up :-

geometry of the mid surface needs to be checked for any distortions and it must patched up before mesh generation.

unnecessary construction lines should be toggled up so that the mesh flow generated is better.

Meshing

• After geometry cleanup, go to 2D mesh menu and select automesh option, change the element size to 5, element type to mixed and select the mid surface and click mesh to generate the mesh.
• Now the mesh as been generated for the components as shown below:-

for inner and outer extracts as the geometry was identical along Y-axis one half was meshed and it was reflected to the other half using reflect command.

• After generating the mesh, quality was checked as per given criteria in the challenge itself,

Conclusion:

So, In this Challenge we learned about geometry cleanup and midsurface extraction, mesh reflection along an axis.